Adjustable tool-joint for cultivators.



W. H. DUNSHA. ADJUSTABLE TOOL JOINT FOR GULTIVATOBS.

Patented Oct. 26, 1909.

APPLICATION IILED F3124, 1909.

Emma won WILLIAM H. DUNSHA, OF GENEVA, OHIO.

ADJUSTABLE TOOL-JOINT FOR CULTIVATORS.

Specification of Letters Patent.

Patented Oct. 26, 1909.

Application filed February 24, 1909. Serial No. 479,689. i

To all whom it may concern:

Be it known that I, IVILLIAM H. DUNsHA, a citizen of the United States,residing at Geneva, in the county of Ashtabula and State of Ohio, haveinvented certain new and useful Improvements in Adjustable Tool-Jointsfor Cultivators, of which the following is a specification.

This invention relates to joints for attaching tools or teeth tocultivators or the like, and is adapted especially for use on handcultivators of the straddle row type, but it can be used to advantage onimplements of various other kinds.

The invention provides a lateral adjust ment of a pivoted horizontalarm, as well as a lateral and vertical adjustment of a tool the shank ofwhich is pivoted by a horizontal pivot at the end of said arm, as willmore fully appear from the following description and the accompanyingdrawings.

In the drawings-Figure 1 is a perspective view of a cultivator with theinvention ap 'plied. thereto; Fig. 2 is a rear perspective detail of thedevice forming the subject of the invention; Fig. 3 is a perspectiveview of the arm which connects the tool to the cultivator frame.

Referring specifically to the drawings, 12 indicates standards which aremounted upon the cultivator frame and which have vertical adjustmentwith respect to the handles by means of known devices. Each standard hasat the lower end a foot 1 the sole or bottom of which is in a horizontalplane and is provided with a vertical depending bolt 3 which extendsthrough the foot. This bolt 3 fits through a slot 8 in an arm 2 theinner end of which fits against the bottom of the foot and which inconsequence of the pivotal connection formed by the bolt, may beextended at any angle to the foot, and in consequence of the slot, maybe extended to various positions. The bolt 3 has a nut 3 to hold the armto the foot in the position set.

At its outer end the arm 2 has a circular head 4 the face of which islocated in a vertical plane and is provided with radial corrugations 11and a central hole 12 which extends through to the slot 8. The shank 5of the tool to be usedwhich may be any tool or point desired has a head10 the face of which is in a vertical plane and properly shaped andarranged to fit against the face of the head 4:. A bolt 9 extendsthrough the hole 12 and through a corresponding hole in the head 10, andhas a nut 6 to fasten the heads together, the face of the head 10 beingalso corrugated to lock with the corrugations 11.

It will be seen that the arm 2 can be turned in a horizontal plane toany desired position, to bring the points closer together or fartherapart and to alter their cutting angle. The slot 8 also allows the toolto be set in or out to the desired distance. This accommodates thecultivator or implement to rows of various widths. In consequence of thepivotal connection at the bolt 9, the tool or tooth can be turned in avertical plane, to any angle desired, in order that the tool may be mosteffectively presented to the ground. This adjustment will be foundparticularly useful in billing up rows.

The invention is not limited to the precise details illustrated anddescribed, nor to the uses mentioned, and no limitation in theserespects is implied.

I claim:

1. The combination of an upright standard, a horizontal arm, a verticalpivot connecting one end of the arm to the lower end of the standard forangular adjustment in a horizontal plane, and a tool shank pivoted tothe outer end of the arm for angular adjustment in a vertical plane.

2. The combination of an upright standard, a horizontal slotted arm,abolt extending vertically through the slot and connecting the arm tothe lower end of the standard for adjustment in a horizontal plane, anda tool shank adjustably connected to the outer end of the arm.

3. The combination of an upright stand ard, an arm pivotally connectedat one end to the foot thereof for adjustment in a horizontal plane,said arm having a head with a vertical face fitting the said face, and ahorizontal pivot bolt connecting the head of the arm and the head of theshank and permitting angular adjustment of the shank in a vertical planetransverse to the longitudinal axis of the arm.

In testimony whereof, I do aflix my signature in presence of twowitnesses.

WVILLIAM H. DUNSHA.

Witnesses:

MONROE E. MILLER, JOHN A. BOMMHARDT.

